Optimal DoF Region for the Asymmetric Two-Pair MIMO Two-Way Relay Channel

Liu, Kangqi; Tao, Meixia; Yuan, Xiaojun

doi:10.1109/tsp.2016.2639458

Cited by 11 publications

(4 citation statements)

References 38 publications

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“…94 [345] full duplex relaying. as well as heterogeneous multi-tier network involving cellular and D2D full duplex communications [97].…”

Section: Communication Systemsmentioning

confidence: 99%

A Journey from Improper Gaussian Signaling to Asymmetric Signaling

Javed¹,

Amin²,

Shihada³

et al. 2020

Preprint

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p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Helvetica} The deviation of continuous and discrete complex random variables from the traditional proper and symmetric assumption to a generalized improper and asymmetric characterization (accounting correlation between a random entity and its complex conjugate), respectively, introduces new design freedom and various potential merits. As such, the theory of impropriety has vast applications in medicine, geology, acoustics, optics, image and pattern recognition, computer vision, and other numerous research fields with our main focus on the communication systems. The journey begins from the design of improper Gaussian signaling in the interference-limited communications and leads to a more elaborate and practically feasible asymmetric discrete modulation design. Such asymmetric shaping bridges the gap between theoretically and practically achievable limits with sophisticated transceiver and detection schemes in both coded/uncoded wireless/optical communication systems. Interestingly, introducing asymmetry and adjusting the transmission parameters according to some design criterion render optimal performance without affecting the bandwidth or power requirements of the systems. This dual-flavored article initially presents the tutorial base content covering the interplay of reality/complexity, propriety/impropriety and circularity/noncircularity and then surveys majority of the contributions in this enormous journey.

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“…94 [345] full duplex relaying. as well as heterogeneous multi-tier network involving cellular and D2D full duplex communications [97].…”

Section: Communication Systemsmentioning

confidence: 99%

A Journey from Improper Gaussian Signaling to Asymmetric Signaling

Javed¹,

Amin²,

Shihada³

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…3) Full Duplex Systems: The performance of full duplex systems with simultaneous transmission and reception is invariably limited by the inherent self-interference (SI). This can be efficiently mitigated with the optimal asymmetric signaling transmission for in-band full-duplex capable transceivers with [49] or without [60] spectrum sharing, SISO [89] and MIMO [93], [345] full duplex relaying. as well as heterogeneous multi-tier network involving cellular and D2D full duplex communications [97].…”

Section: Communication Systemsmentioning

confidence: 99%

A Journey From Improper Gaussian Signaling to Asymmetric Signaling

Javed

Amin

Shihada

et al. 2020

IEEE Commun. Surv. Tutorials

View full text Add to dashboard Cite

The deviation of continuous and discrete complex random variables from the traditional proper and symmetric assumption to a generalized improper and asymmetric characterization (accounting correlation between a random entity and its complex conjugate), respectively, introduces new design freedom and various potential merits. As such, the theory of impropriety has vast applications in medicine, geology, acoustics, optics, image and pattern recognition, computer vision, and other numerous research fields with our main focus on the communication systems. The journey begins from the design of improper Gaussian signaling in the interference-limited communications and leads to a more elaborate and practically feasible asymmetric discrete modulation design. Such asymmetric shaping bridges the gap between theoretically and practically achievable limits with sophisticated transceiver and detection schemes in both coded/uncoded wireless/optical communication systems. Interestingly, introducing asymmetry and adjusting the transmission parameters according to some design criterion render optimal performance without affecting the bandwidth or power requirements of the systems. This dual-flavored article initially presents the tutorial base content covering the interplay of reality/complexity, propriety/impropriety and circularity/non-circularity and then surveys majority of the contributions in this enormous journey.

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“…Recall that x 11 is drawn from a Gaussian distribution. If s is also Gaussian, then the capacity of the channel in (15) is given by…”

Section: B User-to-relay Transmissionmentioning

confidence: 99%

Capacity of the Gaussian Two-Pair Two-Way Relay Channel to Within $\frac{1}{2}$ Bit

Yuan

Xin

Liew

et al. 2019

IEEE Trans. Inform. Theory

Self Cite

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This paper studies the transceiver design of the Gaussian two-pair two-way relay channel (TWRC), where two pairs of users exchange information through a common relay in a pairwise manner. Our main contribution is to show that the capacity of the Gaussian two-pair TWRC is achievable to within 1 2 bit for arbitrary channel conditions. In the proof, we develop a hybrid coding scheme involving Gaussian random coding, nested lattice coding, superposition coding, and network-coded decoding. Further, we present a message-reassembling strategy to decouple the coding design for the user-to-relay and relay-touser links, so as to provide flexibility to fully exploit the channel randomness. Finally, judicious power allocation at the relay is necessary to approach the channel capacity under various channel conditions. I. INTRODUCTIONTwo-way relaying (TWR), in which two users exchange information via a single relay, has attracted much research interest in the past decade. The transmission scheme over a two-way relay channel (TWRC) consists of two links. In the user-to-relay link, the two users transmit signals to the relay; in the relay-to-user link, the relay broadcasts signals to the users. The main idea, termed physical-layer network coding (PNC) [1], is to allow the relay to decode a linear function of incoming messages, and to allow each user to decode the message from the other user by exploiting the self-message. Compared with conventional relaying, PNC-aided two-way

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Optimal DoF Region for the Asymmetric Two-Pair MIMO Two-Way Relay Channel

Cited by 11 publications

References 38 publications

A Journey from Improper Gaussian Signaling to Asymmetric Signaling

A Journey from Improper Gaussian Signaling to Asymmetric Signaling

A Journey From Improper Gaussian Signaling to Asymmetric Signaling

Capacity of the Gaussian Two-Pair Two-Way Relay Channel to Within $\frac{1}{2}$ Bit

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